I could have helped him out, to tell the truth, I _____ too busy.
| A．am | B．was | C．have been | D．had been |
Even if the treatment ________, there is still no magic pill for patients in the late stages of AIDs.
| A．does | B．uses | C．works | D．helps |
He is ______to win the political campaign and becomes the president.
| A．possible | B．likely | C．probable | D．perhaps |
.— Mr White didn't come last night, did he?
— No. We _____for him . A whole night was wasted.
| A．had waited | B．have been waiting |
| C．were waiting | D．had been waiting |
--Steven has got the first prize in the math contest.
--____ he looks so happy today.
| A．There’s no doubt that | B．It’s no wonder that |
| C．Thisis no doubt whether | D．That is no wonder whether |
The film, _______the true story of this Red Army general, attracted people’s interest all over the country.
| A．is based on | B．on the base |
| C．based on | D．which is the base for |